Third to edward b



2 Sheets8heet 1. R. BREWER.

GAR AXLE BOX.

Patented July 8, 1890.

(No Model.) 2 SheetsSheet 2.

- R. BREWER. GAR AXLE BOX.

No. 431,871. Patented July 8, 1890.

M l l i w F m J. J f KN A WIZWESSES 0?} Unrrnn STATES PATENT Orricn.

RUSSELL BREWER, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR OF ONE THIRD TO EDIVARD B. SCHNEIDER AND ABRAHAM ENGARD, BOTII OF SAME PLACE.

QAR AXLE BOX.

SPECIFICATION forming part of Letters Patent No. 431,871, dated July 8, 1890.

Application filed March 10, 1890.

To aZZ whom it may concern.-

Be it known that I, RUSSELL BREWER, a citizen of the United States, and a resident of Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in (Jar- Axle Boxes; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

Figure 1 of the drawings is a representation of a car-axle box in longitudinal section. Fig. 2 is a transverse section of same. Figs. 3, a, and 5 are detail views. Fig. 6 is a top plan view of same, partlyin section; and Fig. 7 an enlarged horizontal section of one of the boxes.

This invention has relation to car-axle boxes; and it consists in the novel construction and combination of parts, all as hereinafter set forth.

In the accompanying drawings, the letter A designates the body or casing of the axle box, and B the journal portion of the axle located within the same, the axle extending through the opening 0 of the casing. In the top of the casing or body is provided a concave bearing D, the surface dof which is presented downward to engage the convex upper surface of a rocker-swivel E. The concave surface (I is transverse, as shown, and its curvature is of greater radius than that of the convex top 6 of the rocker-swivel.

F is the brace or hearing for the axlejournal, said brace being of concave shape to conform to the surface of said journal and having a pivotal connection with the rockerswivel E. For this purpose the brace is preferably provided with a pivot-stud g, projecting upward from its middle portion into a sockct-bearing h, which is made in the bottom of the rocker-swivel. Below the axlejournal a lubrieator-roller R is usually provided, bearing in bracket-seats S, which are held upward by springs S, as indicated.

The object of this invention is to provide in the boxes proper bearings which will automatically and easily accommodate them- Serial No. 343,334. (No model.)

selves to the changes of position taken by the axle-journals in passing around curves of the track or over portions where the rails are of uneven height. In passing around curves the outer wheel or the wheel on the convex side of the curve will drag to some de ree, so that its angular relation to the box horizontally will be changed. The pivotal relation of the brace to the rocker-swivel serves to permit this angular change, and when one rail of the track is higher than the other, as in bends of the road, the axle-journals will take a slight inclination, which is provided for by the rocker construction of the swivelpiece and the concave bearing in the top of the casing. As these changes of position of the axle are accompanied with departures from parallelism with reference to the eon- 7o cave bearings in the top of the box, so that the actual horizontal distance between the journal is shortened, the concave bearings referred to are made of flattened curvature or of greater radius than that of the convexity of the rocker-swivels to allow for the angular deviation.

Having described this invention, what I claim, and desire to secure by Letters Patent,

l. The ear-axle box having the concave bearing in its top, the swivel-rocker having a convex top engaging the same, and the brace or bearing for the journal pivoted to the said swivel-rocker, substantially as specified.

2. In a car-axle box, the combination, with the pivotal brace or bearing for the axle-journal, of the swivel-rocker having a pivotal connection with said brace and a convex top, and the concave bearing in the top of the box, havinga curvature of greater radius than that of the convex top of the swivel-rocker to allow for the angular deviation of the axle, substantially as specified.

3. In a car-axle box, the combination, with a pivotal brace or bearing for the journal, of a rocker-bearing above the brace, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

RUSSELL BREWER.

Witnesses:

PHILIP O. MASI, CHAS. L. TAYLOR. 

